1st: If this is not a ban appeal (which doesnt seem like) it's totally ok for him to do such threads.2nd: You can check for how long you got banned just by trying to join the servers, there will be a screen with the info in there.

I checked it and it seems that your permantly banned from EMC servers because of "rude and inappropiate chat" and as you are a new member i believe there will be no unban in your case, just 7 hours ago you had to read the rules and it seems like your behaviour was not according to such statement, i'm sorry but it doesnt seem like you are getting unbanned.